Materials List: 
Sliders
                
                    
 
         https://www.teachengineering.org/activities/view/cub_energy_lesson04_activity1
        https://www.teachengineering.org/activities/view/cub_energy_lesson04_activity1
    
Each group needs:
- 3 ft fishing line
- small, stiff cardboard box ~5 in x 5 in x 5 in, or a Tupperware container of similar size
- tape (any kind)
- weight scale
- weights (if a problem, see Troubleshooting Tips)
- small basket
- table
 https://www.teachengineering.org/activities/view/cub_energy_lesson04_activity1
        https://www.teachengineering.org/activities/view/cub_energy_lesson04_activity1